Location services like Sonar can affect your battery life, but we've worked hard to minimize the impact and are constantly improving our algorithms. We hope you won't notice any issues, but please let us know if you do! You can reach us anytime at feedback@sonar.me.

Please note that Sonar uses Facebook and Foursquare for its login systems to help us surface nearby friends and friends of friends. Please let us know if you would like additional ways of signing into Sonar.